TY - JOUR T1 - Dr. Katchamart replies JF - The Journal of Rheumatology JO - J Rheumatol SP - 778 LP - 778 DO - 10.3899/jrheum.100975 VL - 38 IS - 4 AU - WANRUCHADA KATCHAMART Y1 - 2011/04/01 UR - http://www.jrheum.org/content/38/4/778.1.abstract N2 - To the Editor:We thank Dr. Yamazaki and colleagues for their comments related to our article1. According to Recommendation 1: Drug interaction, it was recommended that “Trimethoprim and sulfamethoxazole (TMP-SMX) should be avoided in patients treated with MTX.” This recommendation is based on a systematic review by Bourré-Tessier, et al2. The review showed that TMP-SMX was a risk factor for developing bone marrow suppression in one retrospective case-control study … Address correspondence to Dr. Katchamart; E-mail: wanda.katchamart{at}utoronto.ca ER -